hello student ,

To prepare for JEE Mains you have to  at first go through your whole syllabus and know the weightage of each topics. You should prepare your own answer sheet of previous year question papers. by this you can select the important topics of JEE MAIN. As practices make a man perfect so you should practice using various kinds of mock test. To know more & for mock tests click on the link below

https://engeenering.careers360.com/articles/how-prepare-for-jee-main